CN218944068U

CN218944068U - Manual self-destroying needle cylinder

Info

Publication number: CN218944068U
Application number: CN202223610315.7U
Authority: CN
Inventors: 袁宇敬; 杨舟
Original assignee: ZHEJIANG KANGTAI MEDICAL DEVICES CO LTD
Current assignee: ZHEJIANG KANGTAI MEDICAL DEVICES CO LTD
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-02
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a manual self-destroying needle cylinder, which comprises a needle cylinder body, a push rod, sealing rubber, and a needle seat arranged at the end part of the needle cylinder body, wherein the needle seat comprises a hollow needle sleeve, a needle bolt body arranged in the needle sleeve, a needle head arranged in the needle bolt body, and a spring arranged between the needle bolt body and the needle sleeve, the hollow cavity of the needle sleeve comprises a waste needle cavity, a connecting cavity and a needle bolt cavity which are communicated in sequence, a round hole is formed in the side wall of the waste needle cavity, a straight slot is formed in the side wall of the connecting cavity, far from the needle cylinder body, and is connected with the waste needle cavity and the needle bolt cavity, the needle bolt body is arranged in the needle bolt cavity, a pull bolt penetrates through the connecting cavity and the waste needle cavity, and the pull bolt passes through the round hole in the side wall of the waste needle cavity. After medical personnel accomplish the injection, keep away from the power of cylinder body through exerting the arm-tie body, get into useless needle chamber along straight mouthful groove direction with the needle head of arm-tie body and setting in the arm-tie body, break the arm-tie, the arm-tie body gets into useless needle chamber bottom, accomplishes the self-destruction.

Description

Manual self-destroying needle cylinder

Technical Field

The utility model relates to a needle cylinder, in particular to a manual self-destroying needle cylinder.

Background

At present, chinese patent publication No. CN213191805U discloses a syringe protection structure, which comprises an empty cylinder, a protection sleeve and a piston shaft arranged in the empty cylinder, wherein one end of the piston shaft is fixedly connected with a piston. The protective structure of lag is accomplished through the lag with set up in the inside indentation pole setting of lag, and the lag is arranged in empty section of thick bamboo one end, makes the syringe needle arrange in inside the lag, and when extracting the liquid medicine, the lag can protect the liquid medicine bag, and the lag is to empty section of thick bamboo other end indentation when injecting to the patient, and the syringe needle stretches out and pierces patient's skin, and when accomplishing the injection, the syringe needle stretches out patient's skin, and the inside indentation pole of lag promotes the lag and resets, continues to protect the syringe needle, avoids stabbing medical personnel. However, the needle cylinder is still possibly reused by people, and hidden dangers such as residual blood flowing back in the needle head, residual bacteria on the needle head and the like increase the risk of cross infection.

Disclosure of Invention

In view of the above, the present utility model is to provide a manual self-destroying syringe, which can manually retract the needle after completing the injection, thereby completing the self-destroying.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a manual self-destruction is beaten cylinder, includes the cylinder body, sets up the inside push rod of cylinder body, set up in the cylinder body and with push rod one end connection's sealing rubber, still include the needle file, the needle file sets up the tip of cylinder body, the needle file includes hollow needle cover, sets up the needle in the needle cover body, sets up the syringe needle in the needle cover body, sets up the spring between needle cover body and needle cover, the cavity of needle cover is including the useless needle chamber, the connecting chamber of intercommunication in proper order, the needle chamber lateral wall is provided with the round hole, the lateral wall that the needle chamber was kept away from to the connecting chamber is provided with straight mouth groove, straight mouth groove connection useless needle chamber and the needle chamber, the needle cover body sets up the needle chamber is in, the lateral wall of needle cover body is provided with the zip bolt, zip bolt through connecting chamber and useless needle chamber lateral wall's round hole.

Through above-mentioned technical scheme, medical personnel accomplish the injection back, keep away from the power of cylinder body through exerting the arm-tie body, get into useless needle chamber along straight mouthful groove direction with the needle head of arm-tie body and setting in the arm-tie body, break arm-tie, the arm-tie body gets into useless needle chamber bottom, accomplishes the self-destruction.

Preferably, an external thread is arranged at the end part of the needle cylinder body, an internal thread is arranged at the opposite part of the outer wall of the needle sleeve and the needle bolt cavity, and the external thread is screwed and fixed with the internal thread.

Through the technical scheme, the needle seat and the needle cylinder body can be more conveniently and fixedly connected.

Preferably, a pull plug table is arranged at one end of the pull plug body away from the pintle body.

Through the technical scheme, medical staff can more easily apply the force of pulling the bolt body away from the needle bolt body.

Preferably, the side wall of the pulling bolt body is provided with a pulling bolt rib, one end of the pulling bolt rib extends to the connecting cavity, and the other end of the pulling bolt rib is connected with the pulling bolt table.

Through the technical scheme, the pull plug body cannot be broken in advance when a force far away from the pintle body is applied.

Preferably, a first inclined plane is arranged at the position, corresponding to the needle plug cavity, of the inner wall of the needle sleeve, one end of the first inclined plane extends to the connecting cavity and is far away from the internal thread, the needle plug body is arranged on the first inclined plane, and a second inclined plane corresponding to the first inclined plane is arranged at one end of the needle plug body.

Through the technical scheme, the needle cylinder has stronger safety in a normal state.

Preferably, the spring is sleeved on the needle head, and one end of the spring is fixed on the pintle body.

Through the technical scheme, the spring can press the pintle body on the inclined plane I and simultaneously ensure that the spring is not deviated to cause self-destruction failure when the pintle body is pulled.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

fig. 2 is a schematic cross-sectional view of the hub;

fig. 3 is a schematic cross-sectional view of the syringe body.

Reference numerals: 1. a needle; 2. a needle stand; 3. a syringe body; 4. a push rod; 5. sealing rubber; 21. a needle sleeve; 22. a pintle body; 23. a spring; 24. a bolt pulling table; 25. a straight slot; 26. an internal thread; 27. lacing wires; 28. a pull bolt body; 29. a round hole; 30. an external thread; 41. a force application table; 211. a waste needle cavity; 212. a connecting cavity; 213. a pintle chamber; 2131. an inclined plane I; 2132. and a second inclined plane.

Detailed Description

The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.

A manual self-destroying needle cylinder, as shown in fig. 1 to 3, comprises a hollow needle cylinder body 3, a push rod 4 and a needle seat 2.

The end of the syringe body 3 is provided with an external thread 30. The needle holder 2 is arranged in the syringe body 3, and the needle holder 2 is located at the end of the syringe body 3 provided with the external thread 30. The push rod 4 is arranged in the syringe body 3, a force application table 41 is arranged at the end part of the push rod 4 far away from the external thread 30, the force application table 41 is positioned outside the syringe body 3, and sealing rubber 5 is arranged at the end part of the push rod 4 close to the external thread 30.

The needle holder 2 comprises a hollow needle sleeve 21, a needle plug body 22 arranged in the needle sleeve 21, a needle head 1 arranged in the needle plug body 22, and a spring 23 arranged between the needle plug body 22 and the needle sleeve 21. The cutting edge of the needle 1 extends out of the needle sleeve 21. The hollow cavity of the needle sheath 21 comprises a waste needle cavity 211, a connecting cavity 212 and a pintle cavity 213 which are connected in sequence. The side wall of the waste needle cavity 211 is provided with a round hole 29, and the round hole 29 is positioned on the side of the needle sleeve 21 away from the pintle cavity 213. The side wall of the connecting cavity 212 is provided with a straight slot 25, the straight slot 25 is positioned on one side of the needle sleeve 21 away from the needle cylinder body 3, and the straight slot 25 connects the waste needle cavity 211 with the needle plug cavity 213. The outer wall of the needle sleeve 21 is provided with an internal thread 26 opposite to the needle bolt cavity 213 for screwing and fixing with an external thread 30 of the syringe body 3. An inclined plane 2131 is arranged on the inner wall of the needle sleeve 21 corresponding to the needle bolt cavity 213, and one end of the inclined plane 2131 extends to the straight slot 25 and is far away from the internal thread 26. The pintle body 22 is arranged on the inclined plane one 2131, and one end of the pintle body 22 is provided with an inclined plane two 2132 corresponding to the inclined plane one 2131. The side of the pintle body 22 is provided with a pintle body 28, and the pintle body 28 passes through the connecting cavity 212 and the waste needle cavity 211 and extends out of the needle sleeve 21 through the round hole 29. One end of the pull bolt body 28 away from the pintle body 22 is provided with a pull bolt table 24 which is convenient for applying force, the side surface of the pull bolt body 28 is provided with a pull bar 27 which strengthens the connection strength of the pull bolt table 24 and the pull bolt body 28, and the pull bar 27 extends to the connecting cavity 212.

A manual self-destruction injection tube concrete implementation scheme: through screw thread fixed needle file 2 and cylinder body 3, medical personnel exert push rod 4 keep away from the power of cylinder body 3, accomplish extraction injection liquid medicine, and syringe needle 1 pricks patient's skin, and medical personnel exert push rod 4 and are close to the power of cylinder body 3, push rod 4 push to the laminating with cylinder body 3 inner wall, and syringe needle 1 is taken out and is kept away from patient's skin, accomplishes the liquid medicine injection. When the injection is completed, the medical staff applies the force of pulling the needle away from the needle cavity 213 by the other hand, the needle body 22 moves along the connecting cavity 212 and away from the needle cavity 213, when the needle body 22 enters the waste needle cavity 211, the medical staff breaks the pulling needle, the spring 23 is restored, and the elastic force pushes the needle body 22 to move along the waste needle cavity 211 to the end far away from the needle head 1. The medical staff inserts the draw bolt into the straight slot 25 on one side of the connecting cavity 212 far away from the syringe body 3 to complete self-destruction.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. The utility model provides a manual self-destruction is beaten cylinder, includes cylinder body (3), sets up inside push rod (4) of cylinder body (3), sets up inside cylinder body (3) and is connected with push rod (4) one end sealing rubber (5), characterized by: still include needle file (2), needle file (2) set up the tip of cylinder body (3), needle file (2) include hollow needle cover (21), set up needle (22) in needle cover (21), set up syringe needle (1) in needle cover (22), set up spring (23) between needle cover (21) and needle cover (22), the cavity of needle cover (21) is including waste needle chamber (211), link chamber (212), needle chamber (213) that communicate in proper order, waste needle chamber (211) lateral wall is provided with round hole (29), the lateral wall that link chamber (212) kept away from cylinder body (3) is provided with straight mouth groove (25), straight mouth groove (25) connect waste needle chamber (211) and needle chamber (213), needle cover (22) set up in needle chamber (213), the lateral wall of needle cover (22) is provided with the bolt that draws, draw through link chamber (212) and needle chamber (211) lateral wall that waste needle chamber (211) pass through round hole (211).

2. The manual self-destroying needle cartridge according to claim 1, wherein: the end part of the needle cylinder body (3) is provided with an external thread (30), the opposite part of the outer wall of the needle sleeve (21) and the needle bolt cavity (213) is provided with an internal thread (26), and the external thread (30) is screwed and fixed with the internal thread (26).

3. The manual self-destroying needle cartridge according to claim 1, wherein: one end of the pull bolt body (28) far away from the pintle body (22) is provided with a pull bolt table (24).

4. A manual self-destructing syringe according to claim 3 and characterized in that: the side wall of the pulling bolt body (28) is provided with a pulling bolt rib, one end of the pulling bolt rib extends to the connecting cavity (212), and the other end of the pulling bolt rib is connected with the pulling bolt table (24).

5. The manual self-destroying needle cartridge according to claim 1, wherein: an inclined plane one (2131) is arranged at the position, corresponding to the needle plug cavity (213), of the inner wall of the needle sleeve (21), one end of the inclined plane one (2131) extends to the connecting cavity (212) and is far away from the internal thread (26), the needle plug body (22) is arranged on the inclined plane one (2131), and an inclined plane two (2132) corresponding to the inclined plane one (2131) is arranged at one end of the needle plug body (22).

6. The manual self-destroying needle cartridge according to claim 1, wherein: the spring (23) is sleeved on the needle head (1), and one end of the spring (23) is fixed on the pintle body (22).